+ Reply to Thread
Page 1 of 2 1 2 LastLast
Results 1 to 15 of 23

Reload Thread: Enclosure for Two 10"s and One 12"

  1. #1
    dnlpnd's Avatar
    dnlpnd is offline Junior Member



    Join Date
    Dec 2016
    Location
    Waterloo, IA
    Posts
    7
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    6 Post(s)

    Enclosure for Two 10"s and One 12"

    I have two old sub amps, wiring, and three old subs I'd like to build a custom box for and throw in my daily driver. I have 6 cu ft in my trunk available to donate to the cause.

    Previously, the two 4 ohm Lanzar Pro 10's (wired @ 2 ohm mono) maxed out my Hi-Fonics Cyclops and a dual 4 ohm voice coil Kicker Comp VR (wired @ 2 ohm mono) maxed out my Kicker ZR-120.

    Using both amps, all three speakers, and single box what would be preferential for either a ported design or a band-pass, them to all to share the same air space or keep the 10's separate from the 12"?
    • Ported or Band-pass?
    • Common air space or separate?
    Then I also have an old Alpine 7 band parametric that I am wondering if makes sense to throw into the mix upstream of the sub amps. Even though the amps have some low-pass adjustment, the preamp levels and the frequencies to each individual sub amp could be manipulated with the EQ.

    Any constructive suggestions would be greatly appreciated.

    Thanks,

    dnlpnd







  2. #2
    ashren315's Avatar
    ashren315 is online now Member



    Join Date
    Aug 2016
    Location
    Canton, MS
    Posts
    130
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    56 Post(s)

    Re: Enclosure for Two 10"s and One 12"

    I don't think it's good to mix sub sizes is it? Doesn't it actually decrease your SPL due to pressure differences created by the different sized subs or something?




  3. #3
    garychoffmann's Avatar
    garychoffmann is online now CarAudio.com Elite



    Join Date
    Mar 2011
    Location
    Missouri
    Posts
    1,794
    Post Thanks / Like
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    468 Post(s)

    Re: Enclosure for Two 10"s and One 12"

    There is no prefered way to do that. Go ahead and try if you feel differently. Use one or the other. I would do the kicker in 2.25 cubes tuned around 35




  4. #4
    dnlpnd's Avatar
    dnlpnd is offline Junior Member

    Threadstarter


    Join Date
    Dec 2016
    Location
    Waterloo, IA
    Posts
    7
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    6 Post(s)

    Re: Enclosure for Two 10"s and One 12"

    Quote Originally Posted by garychoffmann View Post
    There is no prefered way to do that. Go ahead and try if you feel differently. Use one or the other. I would do the kicker in 2.25 cubes tuned around 35
    Thanks




  5. #5
    dnlpnd's Avatar
    dnlpnd is offline Junior Member

    Threadstarter


    Join Date
    Dec 2016
    Location
    Waterloo, IA
    Posts
    7
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    6 Post(s)

    Re: Enclosure for Two 10"s and One 12"

    Quote Originally Posted by ashren315 View Post
    I don't think it's good to mix sub sizes is it? Doesn't it actually decrease your SPL due to pressure differences created by the different sized subs or something?
    What pressure difference are you referring to? If the speakers are all in phase and receiving the same signal, you're just simultaneously moving more air...right?




  6. #6
    ashren315's Avatar
    ashren315 is online now Member



    Join Date
    Aug 2016
    Location
    Canton, MS
    Posts
    130
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    56 Post(s)

    Re: Enclosure for Two 10"s and One 12"

    At different levels. You will (likely) get canceled frequencies unless you use extensive crossovers to make the larger subs play like below 40htz and the 10 play above 40htz.




  7. Thanks dnlpnd thanked for this post
  8. #7
    garychoffmann's Avatar
    garychoffmann is online now CarAudio.com Elite



    Join Date
    Mar 2011
    Location
    Missouri
    Posts
    1,794
    Post Thanks / Like
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    468 Post(s)

    Re: Enclosure for Two 10"s and One 12"

    Quote Originally Posted by dnlpnd View Post
    What pressure difference are you referring to? If the speakers are all in phase and receiving the same signal, you're just simultaneously moving more air...right?
    Not exactly. Everything being equal possibly. More than likely the stroke of the subwoofers would not be 100% in unison thus causing cancelation




  9. #8
    dnlpnd's Avatar
    dnlpnd is offline Junior Member

    Threadstarter


    Join Date
    Dec 2016
    Location
    Waterloo, IA
    Posts
    7
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    6 Post(s)

    Re: Enclosure for Two 10"s and One 12"

    Quote Originally Posted by garychoffmann View Post
    Not exactly. Everything being equal possibly. More than likely the stroke of the subwoofers would not be 100% in unison thus causing cancelation
    So, in the case of a bass-reflex configuration, if the ported/internal side of the 10"s and the 12" were kept isolated from each other (but tuned to the same frequency), you still think there would be cancellation going on in the cabin?




  10. #9
    hispls's Avatar
    hispls is offline CarAudio.com Veteran



    Join Date
    Sep 2009
    Location
    Cape Cod, Massachusetts
    Posts
    8,393
    Post Thanks / Like
    Images
    15
    Mentioned
    22 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    3168 Post(s)

    Re: Enclosure for Two 10"s and One 12"

    Mix matching different subs is a terrible idea, sharing an enclosure is even worse.




  11. #10
    dnlpnd's Avatar
    dnlpnd is offline Junior Member

    Threadstarter


    Join Date
    Dec 2016
    Location
    Waterloo, IA
    Posts
    7
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    6 Post(s)

    Re: Enclosure for Two 10"s and One 12"

    Quote Originally Posted by hispls View Post
    Mix matching different subs is a terrible idea, sharing an enclosure is even worse.
    Why is it a terrible idea and if the chambers are kept isolated how is sharing an enclosure any different that two separate ones?




  12. #11
    ashren315's Avatar
    ashren315 is online now Member



    Join Date
    Aug 2016
    Location
    Canton, MS
    Posts
    130
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    56 Post(s)

    Re: Enclosure for Two 10"s and One 12"

    You just get canceling sound waves due to how different sized (or even brand) woofers respond. Just like it's not a good idea to take two identical subs and put one in a sealed and one in a ported enclosure. It changes the way they respond and causes frequency cancelation.




  13. Thanks dnlpnd thanked for this post
  14. #12
    hispls's Avatar
    hispls is offline CarAudio.com Veteran



    Join Date
    Sep 2009
    Location
    Cape Cod, Massachusetts
    Posts
    8,393
    Post Thanks / Like
    Images
    15
    Mentioned
    22 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    3168 Post(s)

    Re: Enclosure for Two 10"s and One 12"

    Quote Originally Posted by dnlpnd View Post
    Why is it a terrible idea and if the chambers are kept isolated how is sharing an enclosure any different that two separate ones?
    Mix matching subs or enclosures or anything in a car is inviting trouble, but go ahead and see for yourself.




  15. Thanks dnlpnd thanked for this post
  16. #13
    garychoffmann's Avatar
    garychoffmann is online now CarAudio.com Elite



    Join Date
    Mar 2011
    Location
    Missouri
    Posts
    1,794
    Post Thanks / Like
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    468 Post(s)

    Re: Enclosure for Two 10"s and One 12"

    You can isolate the subs and the chambers but you can't isolate the different outputs of both




  17. Thanks dnlpnd thanked for this post
  18. #14
    Jeffdachef's Avatar
    Jeffdachef is online now 160 db farts n sharts



    Join Date
    Feb 2013
    Location
    South Coast Metro, CA
    Posts
    12,298
    Post Thanks / Like
    Images
    1
    Mentioned
    109 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    5465 Post(s)

    Re: Enclosure for Two 10"s and One 12"

    Quote Originally Posted by dnlpnd View Post
    Why is it a terrible idea and if the chambers are kept isolated how is sharing an enclosure any different that two separate ones?
    point is they are still both making sound waves and those waves cancel eachother out. Basically they cannot coexist in any way shape or form without you wasting your time and money just to find out a universal truth that is basically common sense in the car audio world. You are 1000x better off selling the 12 and getting another 10 and doing a triple 10 ported or selling the 10s and getting another matching 12 ported.

    Also sell both amps and get a proper quality amp thats not hifonics.




    09 Sienna Subs : NOTHING Sub amp: NOTHING
    Headunit: Pioneer 80PRS Mids/Highs amp: PPI 900.4
    Front stage: 3 way active front stage with Massive Audio CKX tweets, alpine type R 6x9 midrange in doors + Crescendo PWX 10s in the kick
    320 amp Singer alt. 1 group 34 under the hood 6 group31 agms in the back 560 amp hours total.

  19. Thanks dnlpnd thanked for this post
    Likes hispls liked this post
  20. #15
    loudenuff's Avatar
    loudenuff is online now CarAudio.com Elite



    Join Date
    Jan 2015
    Location
    WA gwon?
    Posts
    676
    Post Thanks / Like
    Mentioned
    10 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    273 Post(s)

    Re: Enclosure for Two 10"s and One 12"

    Don't take any harshness as hate. There's a lot of technical **** that goes behind the whole speaker thing, I'd say to even get that close to working you'd probably need higher end subwoofers, a dsp and knowledge on operating it, and a lot of time tuning and trying different types of enclosures. Much more effort than it's worth.




  21. Thanks dnlpnd thanked for this post
    Likes dnlpnd liked this post
+ Reply to Thread
Page 1 of 2 1 2 LastLast

User Tag List

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may post attachments
  • You may edit your posts
1e2 Forum